Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E70) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-12-2015, 03:28 PM
Member
 
Join Date: Jul 2014
Location: Lincoln, CA
Posts: 6
BeerHat is on a distinguished road
Thumbs up FIXED: Metallic rattle vibe at idle and during accel..

Hey just an FYI for those who have yet to track down and fix the annoying rattle coming from the rear at low speeds.

For reference, this is a 2008 X5 3.0si

We always had a rattle back there, dealer just looked the other way and said it was considered a normal-condition for the E70 chassis. Hmm. Really.

So yesterday I tracked the problem down to the oval/rectangular exhaust tip(s). They're loosely pressure fitted onto the pipe, then tack welded - small tack top and bottom. When the top tack weld broke free recently, the rattle became a lot worse.

It's actually a fairly easy fix.

Left and right exhaust exit tubes can be removed by loosening the clamp that holds them onto the exhaust. I had to drop the 2 rear exhaust hangers in order to get the clearance to actually pop the tubes off.

Once off, the problem was clear, and so was the solution. Took a 1/8" drill bit, drilled a through-hole into the tack weld, and then threaded in a small stainless screw to keep things tight. A short screw works best, so its a little less noticeable when looking into the tip from the back of the car.

Now, THAT fix only addressed the serious rattle, there was still a subtle tinny tink, buzzy kind of sound when tapping on it. I had a tube off-brand metal filler laying around, and so I used a popsicle stick to work a little bit into the gaps from the backside. Bolted everything back together, and let the tips cure for 24 hours. Worked a treat. Car sounds as tight as a drum.

This stuff's probably better than what I used, but the idea is the same:
3 1/2 Oz. Tube Liquid Metal Filler - Permatex (25909)

Best of luck!

Dan Keller
08 E70 X5 3.0si
96 E36 M3
Reply With Quote

Sponsored Links

  #2  
Old 10-12-2015, 05:16 PM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 7,257
andrewwynn is on a distinguished road
Great share! My wife's x5 has a very similar sound going on and I've not had time to track it down. My guess was a heat shield (recently fixed on her old car)


Sent from my awrPhone using Tapatalk
__________________
E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
Reply With Quote
  #3  
Old 10-15-2015, 10:46 AM
Member
 
Join Date: Jul 2014
Location: Lincoln, CA
Posts: 6
BeerHat is on a distinguished road
Quote:
Originally Posted by andrewwynn View Post
Great share! My wife's x5 has a very similar sound going on and I've not had time to track it down. My guess was a heat shield (recently fixed on her old car)


Time. Man I hear you. I work from home, 2 small kids, a stay-at-home wife with busy schedule, her X5, my Dakota 4x4 and an E36 M3 (which requires nearly the same maintenance as the wife). It's a flippin zoo around here.

There USED to be time and money to maintain our vehicles... I swear it.

Dan
Reply With Quote
Reply

Bookmarks

Tags
buzz, exhaust, metallic, rattle, tips

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 10:40 PM.
vBulletin, Copyright 2021, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.